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As talked about above, for the reason that control cable of the current invention doesn't necessitate a lubricant, an issue concerning workability for coating a lubricant is solved and irregurality of load effectivity of products due to the uneveness of coating just isn't generated. However, there are several problems, in the control cable through which a lubricant is used, resembling problem of operation for coating as a result of dispersion of the load effectivity of merchandise is attributable to the unevenness of a coating, rubbishes and dusts are simply adhered to the lubricant when applying the lubricant to the control cable, shield control cable and drip and the like are generated. For example, in case the scarcity of lubricants is generated because of the lengthy period use of the management cable, there are some issues that the liner is completely worn down and the operationability of the control cable is excessively lowered, and the like. When the particle measurement of the powder is lower than 5 .mu.m, a pinholl is well generated because the powder is agglomerated. With respect to Examples 12 to 15 and Comparative Examples 12 to 14, in accordance with a paste-extrusion method, 18 components by weight of kerosene was added to 100 elements by weight of polytetrafluoroethylene powder (common particle measurement 25 .mu.m) and kneaded to present paste, and the paste was extruded underneath excessive strain to give a tube.

When the paste-extrusion methodology is employed, it is preferable that paste is ready by adding kerosene to polytetrafluoroethylene powder and kneading them, the paste is extruded to offer a tube under high stress and a stranded steel wire is coated with the tube, and after that, the stranded steel wire is dried and baked in a furnace comparable to an electric furnace. When the content material is more that 20% by weight, an extruded product cannot be produced because a slip of a resin occurs on a cylinder barrel in an extruder and the constant feed of the resin cannot be carried out. However, when a organopolysiloxane having too low a viscosity is contained in a big quantity within the resin, there may be a problem that the organopolysiloxane can't be successfully extruded to produce a liner, and thus the molding can't be carried out because of the slipping of the resin on the cylinder barrel in the extruder. When the content of the organopolysiloxane having an extremely-high viscosity is less that 45% by weight and the content of the organopolysiloxane having a lower viscosity is extra that 55% by weight, an extruded product cannot be produced because a slide between a screw and a resin happens in an extruder and the feed of the resin cannot be carried out.

In the present invention, since the organopolysiloxane having an ultra-excessive viscosity and the organopolysiloxane having a decrease viscosity are dispersively contained within the thermoplastic resin used within the above-mentioned liner, it is of course that there isn't any necessity to make use of a lubricant between the interspace of the conduit and the interior cable, and an excellent function that the sliding operation of the conduit and the inner cable will be smoothly carried out for a long time period, is exhibited. Also, the sturdiness of the above-talked about control cable largely relies upon upon the lubricant. The item of the current invention is to delete the above-mentioned disadvantages of conventional control cables and to provide a control cable which doesn't necessitate a lubricant to keep away from a fancy coating operation and which can be used with easy sliding operation of the inner cable for a protracted time frame. Among the above-mentioned thermoplastic resins, polybutylene terephthalate having a melt index of 0.1 to 5 g/10 minutes can be significantly preferably used as a result of the change of load effectivity is small when the control cable is used for an extended time frame.

Accordingly, it is preferable that the melt index is not less than 0.1 g/10 minutes. Accordingly, an organopolysiloxane having an extremely-excessive viscosity and an organopolysiloxane having a decrease viscosity are utilized in the present invention so as to improve extruding stability during producing a liner and to sufficiently release these organopolysiloxanes on the floor of the resin sufficiently. Accordingly, when an inner coat is produced from the polytetrafluoroethylene, so-referred to as a paste-extrusion method is employed. The conduit includes, as an example, a coiled spring produced by winding one or plural flat steel wires or spherical steel wires in abutting convolutions and an outer coat made from a artificial resin which covers the surface floor of the coiled spring. The inside cable normally comprises a stranded wire produced by twisting plural metallic wires or a stranded wire of which surroundings are coated with a artificial resin or bolstered by twisting flat steel wires around the stranded wire.